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OpenStudy (anonymous):
what is cos^-1 (-0.345) what is cos^-1 (-0.345) @Mathematics
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OpenStudy (anonymous):
are you allowed to use your calculators to figure these out?
OpenStudy (anonymous):
lol
OpenStudy (anonymous):
i just want to know how to evaluate/solve this things without calc...my teacher is craze...he may not let us use caclc
OpenStudy (anonymous):
also it better helps me understand
OpenStudy (anonymous):
what would arsin(-0.453) be then
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